Hi Yang,

That's an interesting observation, I wasn't aware that cartoon dash and loop 
may be traced differently. Apparently the "cartoon_flat_sheets" setting only 
applies to dash, not loop. Turning it off will make them follow the same path:

set cartoon_flat_sheets, 0

Cheers,
  Thomas

> On Apr 19, 2018, at 4:15 PM, Yang Su <s...@crystal.harvard.edu> wrote:
> 
> Also, 'cartoon dash' and 'cartoon loop' render beta-strands differently, so I 
> can't combine the two and get a consistent look and feel. The use case is to 
> show regions of the structure as dashed line to indicate 'not covered in 
> study'. I can't use different colors for this purpose because color coding is 
> already used to represent other properties.
> 
> Best,
> Yang
> 
> On Thu, Apr 19, 2018 at 3:56 PM, Yang Su <s...@crystal.harvard.edu> wrote:
> Thanks for the tip, Thomas. 'cartoon dash' works with cartoon representation, 
> but doesn't seem to affect the ribbon representation. For some use cases I 
> like the 'cornered' ribbon representation better than the smooth cartoon 
> representation, but cartoon is still a good alternative if it is not possible 
> to show ribbon as dashed/dotted lines.
> 
> Thanks,
> Yang
> 
> 
> On Thu, Apr 19, 2018 at 1:54 PM, Thomas Holder 
> <thomas.hol...@schrodinger.com> wrote:
> Hi Yang,
> 
> Yes, since PyMOL 1.8.2 there is "cartoon dash". e.g.:
> 
> fetch 1ubq, async=0
> as cartoon
> cartoon dash
> 
> See also:
> https://pymolwiki.org/index.php/Cartoon#USAGE
> 
> Cheers,
>   Thomas
> 
> > On Apr 19, 2018, at 12:54 PM, Yang Su <s...@crystal.harvard.edu> wrote:
> > 
> > Hi,
> > 
> > Is there an option to show the ribbon as dashed or dotted lines in pymol?
> > 
> > Thanks,
> > 
> > Yang

--
Thomas Holder
PyMOL Principal Developer
Schrödinger, Inc.


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